Following the events of Terminator 2: Judgment Day, Skynet deploys a powerful new Rev-9 Terminator (Gabriel Luna) to hunt and kill Dani Ramos (Natalia Reyes), whose survival depends on two women - Grace (Mackenzie Davis), an enhanced soldier sent from the future to protect Dani, and a battle-harded Sarah Connor (Linda Hamilton). While being relentlessly pursued by the Rev-9, the three are led to a T-800 (Arnold Schwarzenegger) from Sarah's past that may prove to be their best hope at saving themselves and the future.